Drycleaning method using dipropylene glycol n-propyl ether

Details Drycleaning method using dipropylene glycol n-propyl ether Drycleaning method using dipropylene glycol n-propyl ether

2006-08-08

2006-08-08

Delcotto, Gregory (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

Cleaning or laundering

Dry cleaning

C510S285000, C510S291000

Reexamination Certificate

active

07087094

ABSTRACT:
A drycleaning method is disclosed. In the method, a composition that comprises dipropylene glycol n-propyl ether (DPnP) and is essentially free of siloxanes or polysulfonic acids is used. The composition contains at least about 80 wt. % DPnP and up to about 15 wt. % of water. The method enables superior stain removal while avoiding excessive fabric shrinkage or soil redeposition.

REFERENCES:
patent: 5876510 (1999-03-01), Kuemin et al.
patent: 6086634 (2000-07-01), Smith
patent: 6172031 (2001-01-01), Stevens
patent: 6828292 (2004-12-01), Noyes et al.
patent: WO 01/16422 (2001-03-01), None
patent: WO 01/94678 (2001-12-01), None

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